In a sealable container mix the grilled chicken breast strips, cream of chicken, vegetables and chicken bullion. Add salt and pepper to taste. Keep refrigerated or in a cooler until needed.
Spray the pie iron well cooking spray. On a plate roll out the crescent roll package in to flat triangles. If you get the big crescent rolls, you should be able to use one triangle and mold it to fit inside one side of the pie iron. Put about 1/3-1/2 cup of the chicken mixture on top of the laid out crescent roll in the pie iron. Cover the mixture with another crescent roll. Seal the edges by pressing down on the dough.
To cook, shut the pie iron and place it near the coals of your campfire. Let it cook on each side about 2 minutes. It is usually good to check it before you flip to get an idea of how it is cooking. Once cooked, open the pie iron and slide out on to a plate.